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Capsaspora Owczarzaki as a unicellular model to study co-option of the ancestral integrin adhesome

AuthorsParra-Acero, Helena ; Harcet, Matija; Pérez-Posada, A.; Brown, N. H.; Ruiz-Trillo, Iñaki
Issue DateJun-2016
CitationMoscow Forum PROTIST (2016)
AbstractAdhesion systems and signaling networks are both essential in multicellular organisms. Some elements of the adhesion and signaling pathways of metazoans, such as proteins from the integrin adhesome are conserved in their closest unicellular relatives. This means these proteins already existed in the unicellular ancestor of metazoans and that they were co-opted for a multicellular lifestyle. To understand how the integrin adhesome was co-opted at the onset of Metazoa, we aim to unravel its function in a close unicellular relative of animals, the filasterean Capsaspora owczarzaki. This protist is the closest unicellular relative to metazoans that contains in its genome the basic core of proteins that constitutes the integrin adhesome. The expression of these proteins is upregulated during the aggregative stage in culture conditions. In order to understand its role, we are developing some molecular and genetic tools, such as immunostaining, transfection, and CRISPR/cas9. We will discuss preliminary data on the localization of several cytoskeletal and adhesion proteins of the integrin adhesome in C. owczarzaki, obtained by overexpression and by immunostaining with antibodies raised against our proteins of interest. We will also discuss the development of CRISPR system in this organism with the aim to develop a complete model system to analyze the origin of animals.
DescriptionTrabajo presentado en el Moscow Forum PROTIST 2016, celebrado en Moscú del 6 al 10 de junio de 2016.
Appears in Collections:(IBE) Comunicaciones congresos
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